The article studied why buildings in Sweden have damages, like leaks and cracks, which cost a lot to fix. They looked at 1105 damages to find the reasons. Here's what they found: Rain and snow cause most moisture damages. Damages from wet concrete and flooring might be more common than we think. Many damages happen where different materials meet. Wear and tear and bad upkeep also cause lots of problems. Problems can happen at any stage of building, but most occur during construction. Often, it's the building owner or managers who are at fault.